AirDistSys 5000
17 – Operator’s Manual
The default TCP port number is 5000.
In order to change the TCP port number
select ‘
TCP
connection
’
from the menu item ‘Data Communication…’ on the menu bar on front panel.
The frequency of data transfer for TCP connection is specified by the Interval Time.
The data transferred by TCP server are separated by TAB delimiters. The data string can be column
headers or the results depending on setting the TCP connection. The part of string with column headers
is ended by
CR carriage return element. On the end of result string is EOL
Example data string with results:
23.1 TAB 23.2 TAB 22.9 EOL
Example data string with column headers:
ta[degC] TAB tnw[degC] TAB tg[degC] CR 23.1 TAB 23.2 TAB 22.9 EOL
The example of TCP Data Client is available in the Program Menu Folder (SENSOR
Electronic\Examples).
C
C
a
a
l
l
c
c
u
u
l
l
a
a
t
t
i
i
o
o
n
n
o
o
f
f
R
R
e
e
s
s
u
u
l
l
t
t
s
s
Air temperature, average speed and standard deviation of speed are calculated as shown in the below
figure.
The sampling rate is a constant and is 8 Hz regardless of the selected mode to display the results. To
increase the bandwidth of the communications, the transducers send to the computer average values
every 2s (i.e., an averages of 16 results). To be able to calculate correctly the standard deviation of the
speed any time, transducers send also the roots of two second average value of square speed.
Turbulence intensity and draught rate are calculated in accordance with the following equation:
%
100
a
v
SD
Tu
=
,
where SD – standard deviation
14
.
3
37
05
,
0
34
62
,
0
-
-
=
SD
v
t
DR
a
a
, for t
a
>34 or v
a
<0.05
DR=0
It is important to set the barometric pressure if a SensoBar transducer is not connected to the system.
